Axile placentation is present in

Options

A. Dianthus
B. Lemon
C. Pea
D. Argemone

Answer

**Step-by-Step Solution:**

1. **Understanding Placentation**: Placentation refers to the arrangement of ovules within the ovary of a flower. There are various types of placentation, including axile, free central, marginal, and parietal.

2. **Identifying Axile Placentation**: Axile placentation occurs when the ovules are arranged around a central axis within a compound ovary, typically formed by the fusion of carpels. This means that the ovules are located in the center of the ovary.

3. **Analyzing the Options**:
- **Dianthus**: This plant exhibits free central placentation, where ovules are present on a central axis but not in a compound ovary. Therefore, this is not axile placentation.
- **Lemon**: In lemon, the ovules are arranged in and around the center of the compound ovary on an axis formed by joint septa. This matches the definition of axile placentation.
- **Pea**: Pea plants show marginal placentation, where ovules are located along the edge or ridge of the ovary. Hence, this is not axile placentation.
- **Argemone**: Argemone has parietal placentation, where ovules develop along the inner wall of the ovary. This also does not qualify as axile placentation.

4. **Conclusion**: Based on the analysis of the options, the correct answer is **Lemon**, as it exhibits axile placentation.

**Final Answer**: Axile placentation is present in **Lemon**.

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